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Darya [45]
3 years ago
12

Please help !!! Need fast

Mathematics
2 answers:
lord [1]3 years ago
8 0
Since b and d are perpendicular the angles they form are 90 degree angles.  Also given that a and b are parallel the angles between a and d are the same as those with b and d.

SO we can say that 4x + 30 = 90
4x = 60
x = 15
evablogger [386]3 years ago
4 0
4x+30=90
4x = 60
  x = 15

answer is B. 15
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